All Around Nevada is a website run by University of Nevada Reno Professor Howard Goldbaum. The site highlights fascinating out of the way places in Nevada. Professor Goldbaum has given us permission to reprint content from the site. Today’s post is about Picnic Cave.
Located near the petroglyphs of the Grimes Point National Recreational Trail, Picnic Cave’s tufa formations seem similar to the brain coral of a tropical reef. Unlike coral, the Picnic Cave formations were never alive. But they were once underwater. Ten thousand years ago, at the end of the last ice age, a vast lake covered much of the Great Basin. It’s possible today to see the horizontal lines in the rocks beneath the cave that show the prehistoric shorelines.